How does the oil pressure relief valve work?
How does the oil pressure relief valve work?
The oil pump will pick up the oil from the sump and deliver the volume required, with the surplus returned to the sump via the oil pressure relief valve (PRV). As the engine gets warmer or the speed increases, the oil volume demanded will increase, and to maintain the overall system pressure, less oil will be discharged back to the sump.
What kind of air pump does a Chevy S10 have?
Come along with Eric O. as we have a look at this 2000 Chevrolet S-10 with a code P0410 Secondary Air Injection Reactor System. It is commonly referred to as the AIR pump. These vehicle are really prone to water intrusion in the pump but as we show in this video it is very important to test the whole system before making the call to the customer.
What causes the oil pressure relief valve to jam?
In one engine I can remember, approved only for use with 10W/40 oils, filling with a 10W/60 caused the relief valve – which rarely saw such an opening with the correct grade of oil – to jam wide open at high speed. Naturally, when the engine returned to idle and since the PRT was still wide open, the gallery oil pressure simply disappeared.
Where is the pressure relief valve on an oil pump?
The oil pump maintains oil pressure to lubricate internal components. Most oil pumps are positive displacement pumps, which deliver more oil than an engine needs. To address this, there’s a pressure relief valve located at the oil pump outlet. Its purpose is to open when engine oil pressure reaches a certain value.
Where is the oil pump located on a Vortec?
Your customer’s Vortec engine features an oil pump that’s bolted to the front of the engine and driven directly by the crankshaft, via splines. The oil pump can be accessed by removing the front cover (more on this later).
Can a stuck relief valve cause low oil pressure?
If the valve remains open, it will dump oil pressure all of the time, including at idle when pressure is normally at its lowest. So a stuck relief valve could cause the symptoms you’ve described (low oil pressure, noise). But you’ve already removed and replaced it.
What happens when the Vortec oil pump produces too much pressure?
The photo above shows a Vortec oil pump with the pressure relief valve and spring removed and placed to the side. When the oil pump produces too much pressure, the relief valve opens and vents some of the pressurized oil back to the suction side of the pump.
